Port Jefferson Sea Conditions and Tide Table

Port Jefferson Sea Conditions table showing wave height, swell direction and period.

High and low tide times are also provided on the table along with the moon phase and forecast weather. Sunrise today is at — and sunset is at —.

Days 1–4 Weather Summary

Heavy rain (total 23mm), heaviest during Mon morning. Cool air temperatures (max 14°C on Mon afternoon, min 7°C on Tue afternoon). Winds increasing (light winds from the SSE on Sun morning, fresh winds from the SSW by Mon afternoon).

Days 5–7 Weather Summary

Moderate rain (total 14mm), heaviest on Wed night. Cool air temperatures (max 13°C on Fri morning, min 6°C on Wed night). Wind will be generally light.

Days 8–10 Weather Summary

Mostly dry. Very mild (max 11°C on Fri night, min 8°C on Sat night). Wind will be generally light.

Days 11–13 Weather Summary

Heavy rain (total 23mm), heaviest during Wed morning. Very mild (max 12°C on Tue afternoon, min 6°C on Wed night). Wind will be generally light.

Sunday
7
Monday
8
Tuesday
9
Wednesday
10
Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thu
18
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
Wave Height Map
High Tide
7:27AM3.81m
5:06PM3.21m
8:15AM3.77m
6:02PM2.97m
9:03AM3.71m
7:09PM2.67m
9:48AM3.64m
8:29PM2.39m
10:31AM3.55m
10:08PM2.21m
11:12AM3.45m
11:59PM2.23m
11:48AM3.35m
1:37AM2.43m
12:22PM3.23m
2:51AM2.70m
12:53PM3.13m
3:48AM2.97m
1:22PM3.04m
4:35AM3.20m
1:52PM2.99m
5:15AM3.36m
2:24PM2.96m
Low Tide
11:43PM-1.09m
12:35PM2.39m
00:31AM-0.86m
1:36PM2.28m
1:20AM-0.51m
2:45PM2.09m
2:10AM-0.06m
3:58PM1.83m
3:02AM0.42m
5:10PM1.48m
3:58AM0.93m
6:10PM1.11m
5:00AM1.39m
7:00PM0.74m
6:09AM1.79m
7:41PM0.43m
7:20AM2.08m
8:18PM0.16m
8:25AM2.26m
8:52PM-0.05m
9:21AM2.38m
9:24PM-0.21m
10:07AM2.44m
Wave
height (m) 
direction
period (s) 
light rain
rain showers
part cloud
light rain
mod rain
light rain
light rain
cloud
light rain
light rain
light rain
light rain
mod rain
cloud
light rain
light rain
cloud
part cloud
part cloud
cloud
part cloud
clear
clear
clear
part cloud
part cloud
cloud
part cloud
cloud
light rain
rain showers
heavy rain
cloud
light rain
part cloud
cloud
light rain
rain shwrs
some clouds
light rain
mod rain
light rain
light rain
cloudy
light rain
light rain
light rain
light rain
mod rain
cloudy
light rain
light rain
cloudy
some clouds
some clouds
cloudy
some clouds
clear
clear
clear
some clouds
some clouds
cloudy
some clouds
cloudy
light rain
rain shwrs
heavy rain
cloudy
light rain
some clouds
cloudy
 km/h
10
SSE
15
SSE
20
SSW
15
S
10
SSE
25
SSW
10
E
10
S
10
SSE
25
SSW
5
SSE
5
SSW
5
ENE
0
SE
5
NNE
0
S
5
SSW
5
SSW
5
SSE
5
S
0
SW
5
NNE
5
N
5
N
10
SSE
5
SSE
10
SSE
5
SSE
10
S
20
S
20
S
25
S
5
SW
5
W
25
SSW
20
SW
 mm 
2
3
1
9
4
3
1
1
1
1
8
1
2
3
2
13
5
max°C
10
9
12
10
11
14
10
8
8
10
9
8
8
7
8
9
13
13
11
11
11
10
10
9
8
9
9
9
10
12
9
10
8
8
7
7
Moonrise
7:21
8:44
10:02
11:16
12:26
1:34
2:42
3:49
4:58
6:07
7:12
Moonset
10:55
11:26
11:49
12:07
12:23
12:37
12:51
1:06
1:24
1:45
2:13
2:50
Sunrise
7:43
7:45
7:46
7:47
7:48
7:48
7:50
7:50
7:52
7:52
7:52
7:54
Sunset
4:16
4:16
4:16
4:16
4:16
4:16
4:16
4:16
4:17
4:17
4:17
4:19
Today's sea temperature in Port Jefferson is
9.6° C
(Statistics for 06 Dec 1981-2005 – mean: 9.0 max: 10.1 min: 7.4°C)
Issued (local time): 9 pm Saturday 06 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest